Explanation:
Principal = $2,500
Rate = 3.8%
5A). The interest Yousuff make in one year
Therefore Time = 1 year.
Simple interest

Therefore the interest Yousuff make in one year = $95.
5B). Interest Yousuff make in after 8 years
the time = 8 years
the interest

Therefore the interest Yousuff make after 8 years = $760.
5C). Principal - interest that Yousuff made after 8 years.
$2500 - $ 760
= $ 1,740.